When I double clicked the icon, nothing happened, no window shown and no sound played. And in steam It just showed "Played" as if I had played it. After running it from console I found this message:./x86/waveform.x86: error while loading shared libraries: libGLU.so.1: cannot open shared object file: No such file or directoryFor some reason it did not load the library even when I had it installed in my Ubuntu.So after running this command from directory /usr/lib:sudo ln -s /usr/lib/x86_64-linux-gnu/libGLU.so.1 libGLU.so.1The game started running and I even did few levels :)Hope it helps someone if they have similar problems.

That my also fix it, but it smells like a bit risky, as you are forcing a what I assume is a 32 bit executable (./x86/waveform.x86...) to use a 64 bit library (/usr/lib/x86_64....). How I solved this was to install the 32 bit version of the library. On my fedora machine: 'sudo yum install mesa-libGLU.i686', as you are on ubuntu, replace yum with apt-get or whatever it is that ubuntu has (or use a graphical software management tool)